Actin filament dynamics are reduced in <i>xik</i> root hairs.

<div><p>(A) Actin filament organization as labeled with YFP-FABD2 is similar in <i>xik</i> and Col-0. Images are single frames from time-lapse observations in cells <i>Col</i>-3 and <i>xik</i>-3 in panel B, respectively.</p> <p>(B) Actin filament activity in wild type (Col) and mutant (xik) root hair cells (see Movie S2) as determined by the decay of image cross-correlation with increasing time intervals (for details see Figure S2). Box-and-whiskers plot indicate median, 25th and 75th percentile, as well as minimal and maximal decay constants for the ten most active regions in a given cell. Mean activity levels in Col-0 are significantly higher than in <i>xik</i> (Mann-Whitney test; p < 0.01).</p>